"cost_index" value obsfucation in ESI no longer required due to System Cost index changes

[MoonlightMassacre]

Feature Request

Currently the https://esi.tech.ccp.is/latest/industry/systems/ cost index responses are limited to 4 digits of precision due to gameplay elements at the time of implementation.
I believe the reasoning behind this limitation no longer apply since the changes to how the system cost index is calculated.
This 4 digit limit is quite painful for anyone looking to build industry spreadsheets with accurate job cost installation prices.

See: #807

Use case

Anyone wanting to calculate industry related prices

Authentication

No change

A public route, no auth required.

Example return

{
"solar_system_id": 30020141,
"cost_indices": [
{
"activity": "manufacturing",
"cost_index": 0.03439368825622633
},
{
"activity": "researching_time_efficiency",
"cost_index": 0.02094838710201359
},
{
"activity": "researching_material_efficiency",
"cost_index": 0.02745641420927296
},
{
"activity": "copying",
"cost_index": 0.012341278349091296
},
{
"activity": "invention",
"cost_index": 0.05032760912884897
},
{
"activity": "reaction",
"cost_index": 0.001658742
}
]
},

Checklist

• Feature request description is provided
• Use case exists
• Feature adds data to existing route
• Feature can reuse existing scope
• Feature does not require auth